JAVA认证:java中怎样应用游标问题解析
public class ResultSetMoveTest {// TODO自动生成体例存根
try {
String sql = "select * from login order by id";
// 获得2.1节中的(3)供给的毗连;Connection con = DBUtil.getConn();
//获得可以前后滚动的类型
Statement stmt = con.createStatement( ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_UPDATABLE);
//经由过程Statement获得结不美观集
ResultSet rs = stmt.executeQuery(sql);
public static void main(String[] args) {
int i = 0;
System.out.println("===起头测试获得的所有记实===\n"); System.out.println("游标下移2条/n"); rs.absolute(2); System.out.println("此刻共在第:" + rs.getRow() + " 行。"); rs.last(); System.out.println("此刻共有:" + rs.getRow() + " 标识表记标帜录。"); rs.moveToInsertRow(); System.out.println("插入一标识表记标帜录。"); rs.insertRow(); System.out.println("插入一标识表记标帜录。"); rs.insertRow(); rs.last(); System.out.println("此刻共有:" + rs.getRow() + " 标识表记标帜录。"); rs.deleteRow(); rs.last(); System.out.println("此刻共有:" + rs.getRow() + " 标识表记标帜录。");
// rs.deleteRow();
System.out.println("===测试获得的所有记实成功===\n");
//写一个最通俗的发芽语句
} catch (Exception e) {
e.printStackTrace();
}
}
}
页:
[1]